In the past, Mercury was used in ALL thermometers, oral or rectal for human use. But Mercury poses health risks. So they changed the internal workings to electronic components.
As an historical point of view, when I grew up, all thermometers contained mercury enclosed in thin glass. If the thermometer was dropped, it could easily break. Mercury when spilled is attracted to it's own droplets. So although the mercury spilled out, it formed little round silver balls that could easily be pushed together, separated again, and pushed back together---all with one finger! Children delighted in "playing" with it, until the droplets rolled around in enough dust that they did not attract to each other as well. Then, we pushed the remaining balls onto a piece of paper and threw it into the regular garbage, which was then burned outdoors or in the coal furnace. After 1980s, they began making thermometers without mercury from fears about mercury toxicity and mercury poisoning. (But plenty of people now over 50 years old never experienced bad effects from playing with mercury droplets.)
Mercury.
Note: mercury is very toxic. If you find mercury (for example, if you break an old mercury thermometer), check with your local poison control center for instructions to dispose of it safely.
Mercury (Atomic number 80) is still used in some thermometers.
Mercury - it's a metal that is liquid at room temperature.
Mercury (Atomic number 80) is still used in some thermometers.
It is dew or ozone
We still use colored alcohol for our liquid in everyday thermometers.
Most thermometers used to contain Mercury until it was found to be toxic.
Most thermometers used to contain mercury until it was found to be toxic.
mercury
Mercury (Atomic number 80) is still used in some thermometers.
Mercury is a d-block element. It is the only metallic element which is a liquid at standard temperature and pressure. It is widely used in thermometers.Mercury is a metal element. It is used in thermometers,barometers and manometers. Also used to make some medicines and cosmetics.
it is mercury. its actually a liquid at room temperature.
Mercury!
Mercury is a liquid metal used in thermometers. However, it becomes a solid at -37.9 F and it can cause mercury poisoning if ingested or inhaled. Therefore, most theremometers use ethyl-alcohol or a plastic strip covered with liquid crystals (called a liquid crystal thermometer).
Mercury (Atomic number 80) is still used in some thermometers.
mercury
the element used in termometers is Mercury.
The liquid metal in many thermometer is mercury (Hg).
Many thermometers use the liquid metal mercury, Hg.
used to be used in thermometers because it is the only metal that is liquid at standard conditions. Highly toxic, Mercury is an extremely rare element in the Earth's crust,